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EP1820370A4 - System and method for controlling a matrix of light emitting diodes and light provided therewith - Google Patents

System and method for controlling a matrix of light emitting diodes and light provided therewith

Info

Publication number
EP1820370A4
EP1820370A4 EP05817364A EP05817364A EP1820370A4 EP 1820370 A4 EP1820370 A4 EP 1820370A4 EP 05817364 A EP05817364 A EP 05817364A EP 05817364 A EP05817364 A EP 05817364A EP 1820370 A4 EP1820370 A4 EP 1820370A4
Authority
EP
European Patent Office
Prior art keywords
current
input
power converter
matrix
controlling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP05817364A
Other languages
German (de)
French (fr)
Other versions
EP1820370B1 (en
EP1820370A1 (en
Inventor
Rachid Chaffai
Louis Duguay
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Elumen Lighting Networks Inc
Original Assignee
Elumen Lighting Networks Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Elumen Lighting Networks Inc filed Critical Elumen Lighting Networks Inc
Publication of EP1820370A1 publication Critical patent/EP1820370A1/en
Publication of EP1820370A4 publication Critical patent/EP1820370A4/en
Application granted granted Critical
Publication of EP1820370B1 publication Critical patent/EP1820370B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10—Controlling the intensity of the light
    • H05B45/18—Controlling the intensity of the light using temperature feedback
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • H05B45/385—Switched mode power supply [SMPS] using flyback topology
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • H05B45/38—Switched mode power supply [SMPS] using boost topology
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Optical Communication System (AREA)

Abstract

A system and method for controlling a matrix of light emitting diodes (LED) connected to an input line comprises a power converter for connecting to the matrix of LEDs and to the input line therebetween and for receiving from the input line an input current and an input voltage characterized by a shape and a frequency and for providing a direct current (D.C.) output for powering up the LEDs, yielding an operating current through the LEDs. The power converter includes a first current sensor for sensing the input current and a second current sensor for sensing the operating current. The system further comprises a controller for connecting to both the input line and to the power converter. The controller includes a voltage sensor for sensing the input voltage and a pre-regulator i) for receiving the operating current, the input current and the input voltage, ii) for biasing the operating current towards a target current value, and iii) for regulating the power converter to cause the input current to follow the shape and frequency of the input voltage, yielding a unity power factor and minimizing the input current harmonic distortion. The present method and system allows maximizing the energy savings, controlling current flowing in the diodes so as to obtain the maximum flux of light with the minimum energy and also allows meeting all safety, EMI, reliability and robustness requirements.
EP05817364A 2004-12-07 2005-12-02 System and method for controlling a matrix of light emitting diodes and light provided therewith Expired - Lifetime EP1820370B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US63344404P 2004-12-07 2004-12-07
US63344304P 2004-12-07 2004-12-07
PCT/CA2005/001833 WO2006060900A1 (en) 2004-12-07 2005-12-02 System and method for controlling a matrix of light emitting diodes and light provided therewith

Publications (3)

Publication Number Publication Date
EP1820370A1 EP1820370A1 (en) 2007-08-22
EP1820370A4 true EP1820370A4 (en) 2009-03-25
EP1820370B1 EP1820370B1 (en) 2012-03-21

Family

ID=36577629

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05817364A Expired - Lifetime EP1820370B1 (en) 2004-12-07 2005-12-02 System and method for controlling a matrix of light emitting diodes and light provided therewith

Country Status (5)

Country Link
US (1) US7876059B2 (en)
EP (1) EP1820370B1 (en)
AT (1) ATE550912T1 (en)
CA (1) CA2590315C (en)
WO (1) WO2006060900A1 (en)

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MX2007002578A (en) * 2007-03-02 2008-11-14 Itesm Energy-saving led-based lighting device.
BRPI0810548B1 (en) 2007-03-30 2018-09-25 Holdip Ltd improvements over lighting systems
KR20100017530A (en) * 2007-04-30 2010-02-16 코닌클리즈케 필립스 일렉트로닉스 엔.브이. Modular solid-state lighting system
US8829820B2 (en) * 2007-08-10 2014-09-09 Cree, Inc. Systems and methods for protecting display components from adverse operating conditions
TWI586216B (en) 2008-10-08 2017-06-01 Holdip Ltd Improvements relating to lighting systems
WO2010085882A1 (en) * 2009-01-27 2010-08-05 Led Roadway Lighting Ltd. Power supply for light emitting diode roadway lighting fixture
US9433046B2 (en) 2011-01-21 2016-08-30 Once Innovations, Inc. Driving circuitry for LED lighting with reduced total harmonic distortion
US9380665B2 (en) 2009-08-14 2016-06-28 Once Innovations, Inc. Spectral shift control for dimmable AC LED lighting
US9232590B2 (en) 2009-08-14 2016-01-05 Once Innovations, Inc. Driving circuitry for LED lighting with reduced total harmonic distortion
US8373363B2 (en) 2009-08-14 2013-02-12 Once Innovations, Inc. Reduction of harmonic distortion for LED loads
US9482397B2 (en) 2010-03-17 2016-11-01 Once Innovations, Inc. Light sources adapted to spectral sensitivity of diurnal avians and humans
US8515697B2 (en) 2010-05-06 2013-08-20 Ansaldo Sts Usa, Inc. Apparatus and method for vital signal state detection in overlay rail signal monitoring
KR20120015232A (en) * 2010-08-11 2012-02-21 삼성엘이디 주식회사 Driving circuit for LED lamps and LED lamps
HUE047559T2 (en) * 2011-01-21 2020-04-28 Signify North America Corp Driving circuitry for led lighting with reduced total harmonic distortion
WO2013008152A1 (en) 2011-07-13 2013-01-17 Koninklijke Philips Electronics N.V. Surge protection device
US9374985B2 (en) 2011-12-14 2016-06-28 Once Innovations, Inc. Method of manufacturing of a light emitting system with adjustable watt equivalence
US9255674B2 (en) 2012-10-04 2016-02-09 Once Innovations, Inc. Method of manufacturing a light emitting diode lighting assembly
TWI510136B (en) * 2013-01-31 2015-11-21 Groups Tech Co Ltd Electronic control gears for led light engine and application thereof
GB201309340D0 (en) 2013-05-23 2013-07-10 Led Lighting Consultants Ltd Improvements relating to power adaptors
CN109600884B (en) 2013-08-02 2021-02-12 昕诺飞北美公司 System and method for illuminating livestock
GB201322022D0 (en) 2013-12-12 2014-01-29 Led Lighting Consultants Ltd Improvements relating to power adaptors
WO2015105823A1 (en) 2014-01-07 2015-07-16 Once Innovations, Inc. System and method of enhancing swine reproduction
US9247603B2 (en) 2014-02-11 2016-01-26 Once Innovations, Inc. Shunt regulator for spectral shift controlled light source
EP3111728A1 (en) * 2014-02-26 2017-01-04 Philips Lighting Holding B.V. Driver arrangement
US9379533B1 (en) * 2014-08-22 2016-06-28 Universal Lighting Technologies, Inc. Input surge protection circuit and method for an LED load
AU2016361503B2 (en) 2015-11-24 2021-08-26 Massachusetts Institute Of Technology Systems and methods for preventing, mitigating, and/or treating dementia
WO2017172869A1 (en) 2016-03-29 2017-10-05 Zdenko Grajcar System and method of illuminating livestock
US10314125B2 (en) 2016-09-30 2019-06-04 Once Innovations, Inc. Dimmable analog AC circuit
KR102869711B1 (en) 2016-11-17 2025-10-15 코그니토 쎄라퓨틱스, 인코포레이티드 Methods and systems for neural stimulation via visual stimulation
US10960225B2 (en) * 2017-10-10 2021-03-30 Massachusetts Institute Of Technology Systems and methods for preventing, mitigating, and/or treating dementia via visual stimulation that binds higher order brain regions, reduces neurodegeneration and neuroinflammation, and improves cognitive function
CN111565698A (en) 2017-10-10 2020-08-21 麻省理工学院 Systems and methods for preventing, alleviating and/or treating dementia
DE102018129437B3 (en) * 2018-11-22 2020-04-23 Krohne Messtechnik Gmbh Transmitter and field device
DE102019118184A1 (en) * 2019-07-05 2021-01-07 Bayerische Motoren Werke Aktiengesellschaft System and method for user-specific adaptation of vehicle parameters
EP4119953A1 (en) * 2021-07-13 2023-01-18 Hamilton Sundstrand Corporation Health monitoring in electric motor control systems

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US5177408A (en) * 1991-07-19 1993-01-05 Magnetek Triad Startup circuit for electronic ballasts for instant-start lamps
US6057651A (en) * 1997-08-26 2000-05-02 Kabushiki Kaisha Tec Lighting apparatus
US6091614A (en) * 1997-12-17 2000-07-18 Ecolux Inc. Voltage booster for enabling the power factor controller of a LED lamp upon low ac or dc supply
DE10119491A1 (en) * 2000-04-28 2002-07-25 Toshiba Lighting & Technology Control device for a light-emitting diode
US6570505B1 (en) * 1997-12-30 2003-05-27 Gelcore Llc LED lamp with a fault-indicating impedance-changing circuit

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US5610451A (en) 1995-11-30 1997-03-11 Magnum Power Plc Uninterruptible power supply with power factor correction
US5803579A (en) * 1996-06-13 1998-09-08 Gentex Corporation Illuminator assembly incorporating light emitting diodes
US6486862B1 (en) 1996-10-31 2002-11-26 Kopin Corporation Card reader display system
US6459919B1 (en) * 1997-08-26 2002-10-01 Color Kinetics, Incorporated Precision illumination methods and systems
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US6441558B1 (en) * 2000-12-07 2002-08-27 Koninklijke Philips Electronics N.V. White LED luminary light control system
US6689999B2 (en) 2001-06-01 2004-02-10 Schott-Fostec, Llc Illumination apparatus utilizing light emitting diodes
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Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5177408A (en) * 1991-07-19 1993-01-05 Magnetek Triad Startup circuit for electronic ballasts for instant-start lamps
US6057651A (en) * 1997-08-26 2000-05-02 Kabushiki Kaisha Tec Lighting apparatus
US6091614A (en) * 1997-12-17 2000-07-18 Ecolux Inc. Voltage booster for enabling the power factor controller of a LED lamp upon low ac or dc supply
US6570505B1 (en) * 1997-12-30 2003-05-27 Gelcore Llc LED lamp with a fault-indicating impedance-changing circuit
DE10119491A1 (en) * 2000-04-28 2002-07-25 Toshiba Lighting & Technology Control device for a light-emitting diode

Also Published As

Publication number Publication date
EP1820370B1 (en) 2012-03-21
EP1820370A1 (en) 2007-08-22
US7876059B2 (en) 2011-01-25
ATE550912T1 (en) 2012-04-15
WO2006060900A1 (en) 2006-06-15
CA2590315C (en) 2013-12-31
US20100013402A1 (en) 2010-01-21
CA2590315A1 (en) 2006-06-15

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